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3 years ago

Tell whether each scale reduces, enlarges, or preserves the size of the actual object.

Mathematics

2 answers:

liubo4ka [24]3 years ago

5 0

1m is equal to 100cm, so the scale reduces the size of the actual object

musickatia [10]3 years ago

3 0

Enlarges because 1 meter is 100 cenitmeters

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Simplify:

Nuetrik [128]

Answer:

Step-by-step explanation:

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2 years ago

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Find the probability of exactly three successes in six trials of a binomial experiment in which the the probability of is 50%.

Lyrx [107]

Start by doing the binomial expansion of (x+y)^6 where x represents success. This is

(x^6y^0) + 6(x^5y^1) +15(x^4y^2) +20(x^3y^3) +15(x^2y^4) +6(x^1y^5) +(x^0y^6)

We are interested in the x^3y^3 term which represents exactly 3 sucesses. Since the probalbility of sucess and failure are both .5 we should be able to figure this out just using the coefficients of the terms which is

20/64 = .3125 which is 31.25%

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3 years ago

Christian reads 1/4 book every 2/3 week. How many books does Christian read per week?

-BARSIC- [3]

Answer:

its the second one 3/8

Step-by-step explanation:

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3 years ago

Find the volume of a hemisphere whose radius is 7.5

Ivahew [28]

The answer is 1767.16 ;)

4 0

3 years ago

The mean amount spent by a family of four on food per month is $500 with a standard deviation of $75. Assuming that the food cos

JulijaS [17]

Answer:

The probability that a family spends less than $410 per month

P( X < 410) = 0.1151

Step-by-step explanation:

Step(i):-

Given mean of the population = 500

Given standard deviation of the Population = 75

Let 'X' be the variable in normal distribution

$Z = \frac{x-mean}{S.D}$

Given X = $410

$Z = \frac{410-500}{75} = - 1.2$

Step(ii):-

The probability that a family spends less than $410 per month

P( X < 410) = P( Z < - 1.2 )

= 0.5 - A( -1.2)

= 0.5 - A(1.2)

= 0.5 - 0.3849 ( ∵from normal table)

= 0.1151

Final answer:-

The probability that a family spends less than $410 per month

P( X < 410) = 0.1151

6 0

3 years ago